Improvement in machines for folding paper collars



B. VOSSNAGK.

MACHINE FOR FOLDING PAPER GOLLARS.

' No. 50,426. Patented Oct. 1 1865.

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UNITED STATES PATENT OFFICE.

EMIL VOSSNAOK, on NEW YORK, N. -Y., ASSIGNOR TO HIMSELF AND G. A. GOLDSMITH & co.

IMPROVEMENT IN MACHINES FOR FOLDING PAPER COLLARS.

Specification forming part of Letters Patent No. 50,426, dated October 10, 1865.

To all whom it may concern:

city and county of New York, in the State of New York, haveinvented certain new and useful Improvements in Machines for Folding Paper Collars and the like articles which are liable to break or crack in folding; and 1 do hereby declare that the following is a full and exact description thereof.

this specification.

Figure 1 is a frontelevatiou of the machine. Fig. 2 is a cross-section on the 'line S S in Fig. 1. Fig. 3v is a longitudinal section, showing a small portion. Fig. 4 is cross-section of a portion, showing, also, a collar in the act of being folded. Fig. 5 is a corresponding section showing the collar as it is discharged from the machine, and Fig. 6 is a corresponding section showing the collar after it has been finally finished by a subsequent operation of passing through rollers.

Similar letters of reference indicate corresponding parts in all the figures.

The collars are supplied to the machine one by one, either by hand or otherwise, and the machine is operated by turninga shaft, either by a hand-crank or otherwise. Each collar is successively bent or partially folded so as to shape and smoothly bend or form the fold, and

is then thrown off and allowed to fall into a suitable receptacle or be removed by hand. The operations may be performed very rapidly, and the bending is very uniform and reliable.

Paper collars require to be folded nearly or quite flat. The ordinary mode of folding, by a knife carrying them each between two surfaces or stops, is liable to produce a rough and broken edge by the rending of the material. Efforts have been recently made to fold by pressing the collars upon a block of rubber or the like yielding material, but the resistance of the rubber is not sufiicient to properly harden and smooth the material of the collar under the great rending strain to which it is subject, and in a little time the rubber becomes deeply recessed, andthe collar is liable to be broken before it begins to be supported by the rubber at the proper point.

My invention obviates these difficulties and enables me to foldwith a high degree of smoothness on'the edge with very great rapidg ity'and to continue the operation for any Be it known that I, EMIL VOSSNACK, of thelength of time required.

To enable others skilled in the art to makeand use my invention, I will proceed to'dein an inclined position on the framing A, as The accompanying drawings form a part of represented, and provided with a slight stop or bar, A against which the lower edge of the collar may rest when in position, ready to beoperated 'on. The bed A is grooved along the line where the collar is to befolded, and'the grooveis very nicely rounded and smoothed, as indicated by a. I make the bed of brass, by preference, butcan m'ake it of iron, steel, hard wood, or any material which will receive and maintain a uniform' and smoothly-rounded groove, and will be rigid under the severeimpressions of the knife.

B is a knife of hardened steel adapted to form the inner side of the fold, and O is a collar of paper which it is desired to fold. The knife B is fixed by screws b to a frame, B, which is adapted to slide on guides D, extending upward from the framing A of the machine. The frame B extends beyond the guides low it to dropupon the collar 0, which has been meantime introduced. On striking the collar it forces it into the shallow and smoothlyrounded groove on, and clearly and smoothly forms the bend, causing the collar to rise at each edge, as indicated in Fig. 4. On the knife again lifting, the collar thus treated is liberated. In order to insure its prompt disengagement from the smooth groove a, into which it has been so compressed, a clearer, G g g, is provided, which is also worked by the rotation of the shaft E, and rises with a sudden but gentle blow under the collar to strike it upward.

G is the main body of the' spring, secured to the framing A by a screw, G, as indicated. The striking-pins g g are fixed to the main body G, and strike through holes inthe bedA,

as represented. The. haft E has a cam,-- e, which at each half-rev lution acts on the projection G on the side of G, and, drawing down the spring .G and its pins 9 9, holds themdown while a collar is-applied and bent on the bed A, and immediately after the knife B rises releases the spring G and allows it to strike a slight blow upward, thrusting its pins 9 9 through the holes in A against the collar 0 and throwing it out of the groove a. The collar then slides down the bed A to he further folded, as usual, by being passedbetween rollare, (not represented,) while the pins g g are again pulled down, anew collar supplied by the feeder by hand orby machinery, and the entire operation repeated.

I can add springs, if necessary, in order to carry down the knife B and its attachments with sufficient speed and force; 0171 can increase the weight by thickening or adding parts tothe frame B to any extent required.

It is not usually necessary for the attendant to thrust the fingers under the knife in properly feeding the machine or removing the collars; yet this will occasionally be done, and a want of skill or attention will sometimes cause the fingers to be caught under kznife B.

The edge of the latter is considerably rdunded,,

and the efl'ect of such contact is 'not nearly as severe where the knife simply falls freely as where it is drawn down byinflexible machinery, as in machines for the purpose heretofore used. I find, also, that the effect of a blow is much better in folding collars which vary much in thickness, because, when the depresrigid bed A in the manner shown, I am able to support it firmly, and to insure that the exterior of the fold is in contact with the groove before the collar is considerably bent, to use for my bed a hard and enduri'ng'material, like iron or steel, which will not materially change with long use, and to act on the collar with any amount of force required to perfectly compress the fibers on the outer side of the bend and adapt them to their new position.

Second, by reason of the fact that the knife B is operated by the cams c-e so as to remain suspended a time at the full height, and then fall by gravity in lieu of being drawn down by the positive motion of the machine, I'am able to secure a considerable time to introduce the collar properly in contact with V the gage-bar A"? to escape with less injury tothe hands in case of an occasional too long delay in removing them from under the knife, and to operate on collars of as great'ditference in thicknesses as ordinarily occur in collar-makin g with great uniformity, without any adj nstinent of the machine.

Having now fully described my invention, I claim and. desire to secure by Letters Patent as follows 1. The employment, in a folding-machine, of

the knife B andhard bed A withthe shallow.

and rounded groove a, so combined as to form the fold, in thematerial G and condense the material on the exterior of the fold against the hard bed, substantially in the manner and for the purposes herein set forth.

2. Thecombination ot' thefreely-falling knife B with the elevating and holding cams e c, and with a grooved bed A a or its equivalent, adapted to compress and round the bend or fold in apaper collar or analogous weak material, all operating together substantially in the manner and for the purpose herein set forth.

' EMIL VOSSNACK.

Witnesses:

THOMAS J). SrE'rsoN, D. W. STETSON. 

